Under this agreement, NetTalk will become a wholesale customer
on LightSquared's 4G-LTE network, and will develop its own branded voice and
high-speed mobile data services for its customers, the companies said in a
statement.

This partnership represents a major step toward making the
latest generation of mobile services available to NetTalk's customer base in
the U.S., the companies said.

"Our partnership with LightSquared helps fulfill our vision
of delivering the most advanced communications services to customers throughout
America," said Anastasios "Takis" Kyriakides, president of NetTalk. "With
LightSquared's wholesale business model, we also now have an opportunity to
serve new customer segments with very competitive services."

"We are extremely excited to provide NetTalk with access to
the wireless broadband capabilities of the LightSquared network," said Sanjiv
Ahuja, chairman and chief executive officer of LightSquared. "This agreement
reaffirms LightSquared's commitment to enable new and innovative companies such
as NetTalk to compete in the U.S. wireless market."